Maryland has filed a lawsuit against the ACC for the league’s attempts to force the university to pay $52.3 million in exit fees for leaving the ACC, NJ.com reports.

In November Maryland announced that is joining the Big Ten Conference in 2014.

The state is arguing that the exit penalty is a violation of antitrust law. According to the Website, Maryland also moved to dismiss the ACC’s lawsuit in the state of North Carolina where the ACC is based, according to a statement from the Maryland Attorney General Douglas Gansler.

“Our lawsuit calls the ACC’s ‘exit fee’ what it really is—an antitrust violation and an illegal activity,” Gansler said in a statement obtained by NJ.com. “Our motion in North Carolina will ensure that a Maryland court will rule on the case.”